使用哨兵应用平台 (SNAP) 和遥感数据绘制地图,绘制不透的表面积增加和城市雨水洪水
Muhammad Nasar Ahmad1, Zhenfeng Shao2, Akib Javed2
1State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan, 43007, Hubei, China. mnasarahmad@whu.edu.cn.
Environmental science and pollution research international
|November 25, 2023
概括
巴基斯坦城市不透面积的增长
科学领域:
- 环境科学 环境科学
- 城市规划 城市规划
- 遥感 遥感 遥感 遥感
背景情况:
- 城市不透水面 (UIS) 和城市雨水洪水 (UPF) 显著影响城市动态和环境.
- 监测UIS扩张及其与UPF的联系对于可持续城市发展至关重要.
研究的目的:
- 从1992年到2022年,绘制巴基斯坦三个主要城市不透水面积 (ISA) 的增加.
- 通过使用Sentinel-1数据,在选定的城市地区绘制雨水洪水范围.
主要方法:
- 利用谷歌地球引擎上的全球无透表面积指数 (GISAI) 与Landsat时间序列数据对UIS进行映射.
- 采用 Sentinel-1 地面范围检测 (GRD) 数据和SNAP工具来绘制雨水洪水范围的地图.
主要成果:
- 伊斯兰堡的UIS增长了16.8%,拉合尔增长了23.5%,卡拉奇增长了16.4%.
- 拉合尔实现了最高的GISAI准确性 (93%),其次是卡拉奇 (86%) 和伊斯兰堡 (85%).
- 洪水主要发生在过去三十年来ISA显著增长的地区.
结论:
- 增加的ISA与巴基斯坦主要城市增强的UPF直接相关.
- 卫星"卫星"号的数据有效地绘制了易受洪水影响的区域,有助于快速检测.
- 建议采用基于建模的方法来识别高风险的UPF位置,以改善城市管理.
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